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<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap Example</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
  <script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</head>
<body>

<div class="container-fluid">
  <h1>Hello World!</h1>
  <p>Resize the browser window to see the effect.</p>
  <div class="row" style="background-color:lavender;">
    <div class="col-sm-5 col-md-6" style="background-color:lightgray;">.col-sm-5 .col-md-6</div>
    <div class="col-sm-5 col-sm-offset-2 col-md-6 col-md-offset-0" style="background-color:lightcyan;">.col-sm-5 .col-sm-offset-2 .col-md-6 .col-md-offset-0</div>
  </div>
</div>
    
</body>
</html>